The atomic mass number is the total number of
- The atomic mass is the total number of protons and
- The atomic mass of an element is the total number of protons and neutrons
- The atomic mass of an element is the total number of
- The atomic mass is equal to the total number of
- Is the atomic mass the total number of protons and neutrons
- The atomic mass is the total number of
- Atomic mass or mass number is equal to the total number of protons and
- The atomic mass is made up of the total number of
- The atomic mass is figured by counting the total number of ____ an atom has
- The atomic mass is always equal to the total number of
- Generally speaking the atomic mass or mass number is equal to the total number of
- The mass number of sodium is the total number of sub atomic particles in the